How can I select an object in the viewport in 2.8(1)?
Hmm ... that's a lot of empties in the outliner ... let's hide them, uncheck empties

Also make sure that objects are selectable, enable Selectable in the restriction toggles - the one that looks like a paper airplane.



If you have checked that the objects are selectable then you need to check the View Object Types Menu has Mesh selection enabled: